Deng51.e00 is an ARC/INFO interchange file. The file can only be used
with Geographic Information System (GIS) software, such as ARC/INFO, the
file's native format, or another GIS software package. The file is a
"vector model" which is information about points, lines, and polygons
stored as a collection of x,y coordinates. The features in this file
such as coastlines and country boundaries are stored as a collection of
point coordinates.

Deng51.e00 was digitized from a paper map. The source of which is:
"Distribution of Dengue and Yellow Fever: Atlas of Diseases ? Plate 5."
The American Geographical Society, The Geographic Review, Vol. 42, No.
4, 1952.

This GIS data was created as part of The Center for International
Development?s ongoing research into the role of geography in economic
development (see www.cid.harvard.edu/economic.htm
<http://www.cid.harvard.edu/cidglobal/economic.htm>). It was created
between 1998 and 1999. Please reference CID if you use this data in a
publication.

